vmstat.c revision 1.13
1 /* 2 * Copyright (c) 1980, 1986, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/time.h> 46 #include <sys/proc.h> 47 #include <sys/user.h> 48 #include <sys/dkstat.h> 49 #include <sys/buf.h> 50 #include <sys/namei.h> 51 #include <sys/malloc.h> 52 #include <sys/signal.h> 53 #include <sys/fcntl.h> 54 #include <sys/ioctl.h> 55 #include <sys/sysctl.h> 56 #include <vm/vm.h> 57 #include <time.h> 58 #include <nlist.h> 59 #include <kvm.h> 60 #include <errno.h> 61 #include <unistd.h> 62 #include <stdio.h> 63 #include <ctype.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <paths.h> 67 #include <limits.h> 68 69 #define NEWVM /* XXX till old has been updated or purged */ 70 struct nlist namelist[] = { 71 #define X_CPTIME 0 72 { "_cp_time" }, 73 #define X_DK_NDRIVE 1 74 { "_dk_ndrive" }, 75 #define X_SUM 2 76 { "_cnt" }, 77 #define X_BOOTTIME 3 78 { "_boottime" }, 79 #define X_DKXFER 4 80 { "_dk_xfer" }, 81 #define X_HZ 5 82 { "_hz" }, 83 #define X_STATHZ 6 84 { "_stathz" }, 85 #define X_NCHSTATS 7 86 { "_nchstats" }, 87 #define X_INTRNAMES 8 88 { "_intrnames" }, 89 #define X_EINTRNAMES 9 90 { "_eintrnames" }, 91 #define X_INTRCNT 10 92 { "_intrcnt" }, 93 #define X_EINTRCNT 11 94 { "_eintrcnt" }, 95 #define X_KMEMSTAT 12 96 { "_kmemstats" }, 97 #define X_KMEMBUCKETS 13 98 { "_bucket" }, 99 #ifdef notdef 100 #define X_DEFICIT 14 101 { "_deficit" }, 102 #define X_FORKSTAT 15 103 { "_forkstat" }, 104 #define X_REC 16 105 { "_rectime" }, 106 #define X_PGIN 17 107 { "_pgintime" }, 108 #define X_XSTATS 18 109 { "_xstats" }, 110 #define X_END 18 111 #else 112 #define X_END 14 113 #endif 114 #if defined(hp300) || defined(luna68k) 115 #define X_HPDINIT (X_END) 116 { "_hp_dinit" }, 117 #endif 118 #ifdef mips 119 #define X_SCSI_DINIT (X_END) 120 { "_scsi_dinit" }, 121 #endif 122 #ifdef tahoe 123 #define X_VBDINIT (X_END) 124 { "_vbdinit" }, 125 #define X_CKEYSTATS (X_END+1) 126 { "_ckeystats" }, 127 #define X_DKEYSTATS (X_END+2) 128 { "_dkeystats" }, 129 #endif 130 #ifdef vax 131 #define X_MBDINIT (X_END) 132 { "_mbdinit" }, 133 #define X_UBDINIT (X_END+1) 134 { "_ubdinit" }, 135 #endif 136 { "" }, 137 }; 138 139 struct _disk { 140 long time[CPUSTATES]; 141 long *xfer; 142 } cur, last; 143 144 struct vmmeter sum, osum; 145 char **dr_name; 146 int *dr_select, dk_ndrive, ndrives; 147 148 int winlines = 20; 149 150 kvm_t *kd; 151 152 #define FORKSTAT 0x01 153 #define INTRSTAT 0x02 154 #define MEMSTAT 0x04 155 #define SUMSTAT 0x08 156 #define TIMESTAT 0x10 157 #define VMSTAT 0x20 158 159 #include "names.c" /* disk names -- machine dependent */ 160 161 void cpustats(), dkstats(), dointr(), domem(), dosum(); 162 void dovmstat(), kread(), usage(); 163 #ifdef notdef 164 void dotimes(), doforkst(); 165 #endif 166 167 main(argc, argv) 168 register int argc; 169 register char **argv; 170 { 171 extern int optind; 172 extern char *optarg; 173 register int c, todo; 174 u_int interval; 175 int reps; 176 char *memf, *nlistf; 177 char errbuf[_POSIX2_LINE_MAX]; 178 179 memf = nlistf = NULL; 180 interval = reps = todo = 0; 181 while ((c = getopt(argc, argv, "c:fiM:mN:stw:")) != EOF) { 182 switch (c) { 183 case 'c': 184 reps = atoi(optarg); 185 break; 186 #ifndef notdef 187 case 'f': 188 todo |= FORKSTAT; 189 break; 190 #endif 191 case 'i': 192 todo |= INTRSTAT; 193 break; 194 case 'M': 195 memf = optarg; 196 break; 197 case 'm': 198 todo |= MEMSTAT; 199 break; 200 case 'N': 201 nlistf = optarg; 202 break; 203 case 's': 204 todo |= SUMSTAT; 205 break; 206 #ifndef notdef 207 case 't': 208 todo |= TIMESTAT; 209 break; 210 #endif 211 case 'w': 212 interval = atoi(optarg); 213 break; 214 case '?': 215 default: 216 usage(); 217 } 218 } 219 argc -= optind; 220 argv += optind; 221 222 if (todo == 0) 223 todo = VMSTAT; 224 225 /* 226 * Discard setgid privileges if not the running kernel so that bad 227 * guys can't print interesting stuff from kernel memory. 228 */ 229 if (nlistf != NULL || memf != NULL) 230 setgid(getgid()); 231 232 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 233 if (kd == 0) { 234 (void)fprintf(stderr, 235 "vmstat: kvm_openfiles: %s\n", errbuf); 236 exit(1); 237 } 238 239 if ((c = kvm_nlist(kd, namelist)) != 0) { 240 if (c > 0) { 241 (void)fprintf(stderr, 242 "vmstat: undefined symbols:"); 243 for (c = 0; 244 c < sizeof(namelist)/sizeof(namelist[0]); c++) 245 if (namelist[c].n_type == 0) 246 fprintf(stderr, " %s", 247 namelist[c].n_name); 248 (void)fputc('\n', stderr); 249 } else 250 (void)fprintf(stderr, "vmstat: kvm_nlist: %s\n", 251 kvm_geterr(kd)); 252 exit(1); 253 } 254 255 if (todo & VMSTAT) { 256 char **getdrivedata(); 257 struct winsize winsize; 258 259 argv = getdrivedata(argv); 260 winsize.ws_row = 0; 261 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 262 if (winsize.ws_row > 0) 263 winlines = winsize.ws_row; 264 265 } 266 267 #define BACKWARD_COMPATIBILITY 268 #ifdef BACKWARD_COMPATIBILITY 269 if (*argv) { 270 interval = atoi(*argv); 271 if (*++argv) 272 reps = atoi(*argv); 273 } 274 #endif 275 276 if (interval) { 277 if (!reps) 278 reps = -1; 279 } else if (reps) 280 interval = 1; 281 282 #ifdef notdef 283 if (todo & FORKSTAT) 284 doforkst(); 285 #endif 286 if (todo & MEMSTAT) 287 domem(); 288 if (todo & SUMSTAT) 289 dosum(); 290 #ifdef notdef 291 if (todo & TIMESTAT) 292 dotimes(); 293 #endif 294 if (todo & INTRSTAT) 295 dointr(); 296 if (todo & VMSTAT) 297 dovmstat(interval, reps); 298 exit(0); 299 } 300 301 char ** 302 getdrivedata(argv) 303 char **argv; 304 { 305 register int i; 306 register char **cp; 307 char buf[30]; 308 309 kread(X_DK_NDRIVE, &dk_ndrive, sizeof(dk_ndrive)); 310 if (dk_ndrive <= 0) { 311 (void)fprintf(stderr, "vmstat: dk_ndrive %d\n", dk_ndrive); 312 exit(1); 313 } 314 dr_select = calloc((size_t)dk_ndrive, sizeof(int)); 315 dr_name = calloc((size_t)dk_ndrive, sizeof(char *)); 316 for (i = 0; i < dk_ndrive; i++) 317 dr_name[i] = NULL; 318 cur.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 319 last.xfer = calloc((size_t)dk_ndrive, sizeof(long)); 320 if (!read_names()) 321 exit (1); 322 for (i = 0; i < dk_ndrive; i++) 323 if (dr_name[i] == NULL) { 324 (void)sprintf(buf, "??%d", i); 325 dr_name[i] = strdup(buf); 326 } 327 328 /* 329 * Choose drives to be displayed. Priority goes to (in order) drives 330 * supplied as arguments, default drives. If everything isn't filled 331 * in and there are drives not taken care of, display the first few 332 * that fit. 333 */ 334 #define BACKWARD_COMPATIBILITY 335 for (ndrives = 0; *argv; ++argv) { 336 #ifdef BACKWARD_COMPATIBILITY 337 if (isdigit(**argv)) 338 break; 339 #endif 340 for (i = 0; i < dk_ndrive; i++) { 341 if (strcmp(dr_name[i], *argv)) 342 continue; 343 dr_select[i] = 1; 344 ++ndrives; 345 break; 346 } 347 } 348 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 349 if (dr_select[i]) 350 continue; 351 for (cp = defdrives; *cp; cp++) 352 if (strcmp(dr_name[i], *cp) == 0) { 353 dr_select[i] = 1; 354 ++ndrives; 355 break; 356 } 357 } 358 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 359 if (dr_select[i]) 360 continue; 361 dr_select[i] = 1; 362 ++ndrives; 363 } 364 return(argv); 365 } 366 367 long 368 getuptime() 369 { 370 static time_t now, boottime; 371 time_t uptime; 372 373 if (boottime == 0) 374 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 375 (void)time(&now); 376 uptime = now - boottime; 377 if (uptime <= 0 || uptime > 60*60*24*365*10) { 378 (void)fprintf(stderr, 379 "vmstat: time makes no sense; namelist must be wrong.\n"); 380 exit(1); 381 } 382 return(uptime); 383 } 384 385 int hz, hdrcnt; 386 387 void 388 dovmstat(interval, reps) 389 u_int interval; 390 int reps; 391 { 392 struct vmtotal total; 393 time_t uptime, halfuptime; 394 void needhdr(); 395 int mib[2], size; 396 397 uptime = getuptime(); 398 halfuptime = uptime / 2; 399 (void)signal(SIGCONT, needhdr); 400 401 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 402 kread(X_STATHZ, &hz, sizeof(hz)); 403 if (!hz) 404 kread(X_HZ, &hz, sizeof(hz)); 405 406 for (hdrcnt = 1;;) { 407 if (!--hdrcnt) 408 printhdr(); 409 kread(X_CPTIME, cur.time, sizeof(cur.time)); 410 kread(X_DKXFER, cur.xfer, sizeof(*cur.xfer) * dk_ndrive); 411 kread(X_SUM, &sum, sizeof(sum)); 412 size = sizeof(total); 413 mib[0] = CTL_VM; 414 mib[1] = VM_METER; 415 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 416 printf("Can't get kerninfo: %s\n", strerror(errno)); 417 bzero(&total, sizeof(total)); 418 } 419 (void)printf("%2d%2d%2d", 420 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 421 #define pgtok(a) ((a) * sum.v_page_size >> 10) 422 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 423 (void)printf("%6ld%6ld ", 424 pgtok(total.t_avm), pgtok(total.t_free)); 425 #ifdef NEWVM 426 (void)printf("%4lu ", rate(sum.v_faults - osum.v_faults)); 427 (void)printf("%3lu ", 428 rate(sum.v_reactivated - osum.v_reactivated)); 429 (void)printf("%3lu ", rate(sum.v_pageins - osum.v_pageins)); 430 (void)printf("%3lu %3lu ", 431 rate(sum.v_pageouts - osum.v_pageouts), 0); 432 #else 433 (void)printf("%3lu %2lu ", 434 rate(sum.v_pgrec - (sum.v_xsfrec+sum.v_xifrec) - 435 (osum.v_pgrec - (osum.v_xsfrec+osum.v_xifrec))), 436 rate(sum.v_xsfrec + sum.v_xifrec - 437 osum.v_xsfrec - osum.v_xifrec)); 438 (void)printf("%3lu ", 439 rate(pgtok(sum.v_pgpgin - osum.v_pgpgin))); 440 (void)printf("%3lu %3lu ", 441 rate(pgtok(sum.v_pgpgout - osum.v_pgpgout)), 442 rate(pgtok(sum.v_dfree - osum.v_dfree))); 443 (void)printf("%3d ", pgtok(deficit)); 444 #endif 445 (void)printf("%3lu ", rate(sum.v_scan - osum.v_scan)); 446 dkstats(); 447 (void)printf("%4lu %4lu %3lu ", 448 rate(sum.v_intr - osum.v_intr), 449 rate(sum.v_syscall - osum.v_syscall), 450 rate(sum.v_swtch - osum.v_swtch)); 451 cpustats(); 452 (void)printf("\n"); 453 (void)fflush(stdout); 454 if (reps >= 0 && --reps <= 0) 455 break; 456 osum = sum; 457 uptime = interval; 458 /* 459 * We round upward to avoid losing low-frequency events 460 * (i.e., >= 1 per interval but < 1 per second). 461 */ 462 halfuptime = (uptime + 1) / 2; 463 (void)sleep(interval); 464 } 465 } 466 467 printhdr() 468 { 469 register int i; 470 471 (void)printf(" procs memory page%*s", 20, ""); 472 if (ndrives > 1) 473 (void)printf("disks %*s faults cpu\n", 474 ndrives * 3 - 6, ""); 475 else 476 (void)printf("%*s faults cpu\n", ndrives * 3, ""); 477 #ifndef NEWVM 478 (void)printf(" r b w avm fre re at pi po fr de sr "); 479 #else 480 (void)printf(" r b w avm fre flt re pi po fr sr "); 481 #endif 482 for (i = 0; i < dk_ndrive; i++) 483 if (dr_select[i]) 484 (void)printf("%c%c ", dr_name[i][0], 485 dr_name[i][strlen(dr_name[i]) - 1]); 486 (void)printf(" in sy cs us sy id\n"); 487 hdrcnt = winlines - 2; 488 } 489 490 /* 491 * Force a header to be prepended to the next output. 492 */ 493 void 494 needhdr() 495 { 496 497 hdrcnt = 1; 498 } 499 500 #ifdef notdef 501 void 502 dotimes() 503 { 504 u_int pgintime, rectime; 505 506 kread(X_REC, &rectime, sizeof(rectime)); 507 kread(X_PGIN, &pgintime, sizeof(pgintime)); 508 kread(X_SUM, &sum, sizeof(sum)); 509 (void)printf("%u reclaims, %u total time (usec)\n", 510 sum.v_pgrec, rectime); 511 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 512 (void)printf("\n"); 513 (void)printf("%u page ins, %u total time (msec)\n", 514 sum.v_pgin, pgintime / 10); 515 (void)printf("average: %8.1f msec / page in\n", 516 pgintime / (sum.v_pgin * 10.0)); 517 } 518 #endif 519 520 pct(top, bot) 521 long top, bot; 522 { 523 long ans; 524 525 if (bot == 0) 526 return(0); 527 ans = (quad_t)top * 100 / bot; 528 return (ans); 529 } 530 531 #define PCT(top, bot) pct((long)(top), (long)(bot)) 532 533 #if defined(tahoe) 534 #include <machine/cpu.h> 535 #endif 536 537 void 538 dosum() 539 { 540 struct nchstats nchstats; 541 #ifndef NEWVM 542 struct xstats xstats; 543 #endif 544 long nchtotal; 545 #if defined(tahoe) 546 struct keystats keystats; 547 #endif 548 549 kread(X_SUM, &sum, sizeof(sum)); 550 (void)printf("%9u cpu context switches\n", sum.v_swtch); 551 (void)printf("%9u device interrupts\n", sum.v_intr); 552 (void)printf("%9u software interrupts\n", sum.v_soft); 553 #ifdef vax 554 (void)printf("%9u pseudo-dma dz interrupts\n", sum.v_pdma); 555 #endif 556 (void)printf("%9u traps\n", sum.v_trap); 557 (void)printf("%9u system calls\n", sum.v_syscall); 558 (void)printf("%9u total faults taken\n", sum.v_faults); 559 (void)printf("%9u swap ins\n", sum.v_swpin); 560 (void)printf("%9u swap outs\n", sum.v_swpout); 561 (void)printf("%9u pages swapped in\n", sum.v_pswpin / CLSIZE); 562 (void)printf("%9u pages swapped out\n", sum.v_pswpout / CLSIZE); 563 (void)printf("%9u page ins\n", sum.v_pageins); 564 (void)printf("%9u page outs\n", sum.v_pageouts); 565 (void)printf("%9u pages paged in\n", sum.v_pgpgin); 566 (void)printf("%9u pages paged out\n", sum.v_pgpgout); 567 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 568 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 569 (void)printf("%9u zero fill pages created\n", sum.v_nzfod / CLSIZE); 570 (void)printf("%9u zero fill page faults\n", sum.v_zfod / CLSIZE); 571 (void)printf("%9u pages examined by the clock daemon\n", sum.v_scan); 572 (void)printf("%9u revolutions of the clock hand\n", sum.v_rev); 573 #ifdef NEWVM 574 (void)printf("%9u VM object cache lookups\n", sum.v_lookups); 575 (void)printf("%9u VM object hits\n", sum.v_hits); 576 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 577 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 578 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 579 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 580 (void)printf("%9u pages free\n", sum.v_free_count); 581 (void)printf("%9u pages wired down\n", sum.v_wire_count); 582 (void)printf("%9u pages active\n", sum.v_active_count); 583 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 584 (void)printf("%9u bytes per page\n", sum.v_page_size); 585 #else 586 (void)printf("%9u sequential process pages freed\n", sum.v_seqfree); 587 (void)printf("%9u total reclaims (%d%% fast)\n", sum.v_pgrec, 588 PCT(sum.v_fastpgrec, sum.v_pgrec)); 589 (void)printf("%9u reclaims from free list\n", sum.v_pgfrec); 590 (void)printf("%9u executable fill pages created\n", 591 sum.v_nexfod / CLSIZE); 592 (void)printf("%9u executable fill page faults\n", 593 sum.v_exfod / CLSIZE); 594 (void)printf("%9u swap text pages found in free list\n", 595 sum.v_xsfrec); 596 (void)printf("%9u inode text pages found in free list\n", 597 sum.v_xifrec); 598 (void)printf("%9u file fill pages created\n", sum.v_nvrfod / CLSIZE); 599 (void)printf("%9u file fill page faults\n", sum.v_vrfod / CLSIZE); 600 (void)printf("%9u pages freed by the clock daemon\n", 601 sum.v_dfree / CLSIZE); 602 #endif 603 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 604 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 605 nchstats.ncs_badhits + nchstats.ncs_falsehits + 606 nchstats.ncs_miss + nchstats.ncs_long; 607 (void)printf("%9ld total name lookups\n", nchtotal); 608 (void)printf( 609 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 610 "", PCT(nchstats.ncs_goodhits, nchtotal), 611 PCT(nchstats.ncs_neghits, nchtotal), 612 PCT(nchstats.ncs_pass2, nchtotal)); 613 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 614 PCT(nchstats.ncs_badhits, nchtotal), 615 PCT(nchstats.ncs_falsehits, nchtotal), 616 PCT(nchstats.ncs_long, nchtotal)); 617 #ifndef NEWVM 618 kread(X_XSTATS, &xstats, sizeof(xstats)); 619 (void)printf("%9lu total calls to xalloc (cache hits %d%%)\n", 620 xstats.alloc, PCT(xstats.alloc_cachehit, xstats.alloc)); 621 (void)printf("%9s sticky %lu flushed %lu unused %lu\n", "", 622 xstats.alloc_inuse, xstats.alloc_cacheflush, xstats.alloc_unused); 623 (void)printf("%9lu total calls to xfree", xstats.free); 624 (void)printf(" (sticky %lu cached %lu swapped %lu)\n", 625 xstats.free_inuse, xstats.free_cache, xstats.free_cacheswap); 626 #endif 627 #if defined(tahoe) 628 kread(X_CKEYSTATS, &keystats, sizeof(keystats)); 629 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 630 keystats.ks_allocs, "code cache keys allocated", 631 PCT(keystats.ks_allocfree, keystats.ks_allocs), 632 PCT(keystats.ks_norefs, keystats.ks_allocs), 633 PCT(keystats.ks_taken, keystats.ks_allocs), 634 PCT(keystats.ks_shared, keystats.ks_allocs)); 635 kread(X_DKEYSTATS, &keystats, sizeof(keystats)); 636 (void)printf("%9d %s (free %d%% norefs %d%% taken %d%% shared %d%%)\n", 637 keystats.ks_allocs, "data cache keys allocated", 638 PCT(keystats.ks_allocfree, keystats.ks_allocs), 639 PCT(keystats.ks_norefs, keystats.ks_allocs), 640 PCT(keystats.ks_taken, keystats.ks_allocs), 641 PCT(keystats.ks_shared, keystats.ks_allocs)); 642 #endif 643 } 644 645 #ifdef notdef 646 void 647 doforkst() 648 { 649 struct forkstat fks; 650 651 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 652 (void)printf("%d forks, %d pages, average %.2f\n", 653 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 654 (void)printf("%d vforks, %d pages, average %.2f\n", 655 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 656 } 657 #endif 658 659 void 660 dkstats() 661 { 662 register int dn, state; 663 double etime; 664 long tmp; 665 666 for (dn = 0; dn < dk_ndrive; ++dn) { 667 tmp = cur.xfer[dn]; 668 cur.xfer[dn] -= last.xfer[dn]; 669 last.xfer[dn] = tmp; 670 } 671 etime = 0; 672 for (state = 0; state < CPUSTATES; ++state) { 673 tmp = cur.time[state]; 674 cur.time[state] -= last.time[state]; 675 last.time[state] = tmp; 676 etime += cur.time[state]; 677 } 678 if (etime == 0) 679 etime = 1; 680 etime /= hz; 681 for (dn = 0; dn < dk_ndrive; ++dn) { 682 if (!dr_select[dn]) 683 continue; 684 (void)printf("%2.0f ", cur.xfer[dn] / etime); 685 } 686 } 687 688 void 689 cpustats() 690 { 691 register int state; 692 double pct, total; 693 694 total = 0; 695 for (state = 0; state < CPUSTATES; ++state) 696 total += cur.time[state]; 697 if (total) 698 pct = 100 / total; 699 else 700 pct = 0; 701 (void)printf("%2.0f ", (cur.time[CP_USER] + cur.time[CP_NICE]) * pct); 702 (void)printf("%2.0f ", (cur.time[CP_SYS] + cur.time[CP_INTR]) * pct); 703 (void)printf("%2.0f", cur.time[CP_IDLE] * pct); 704 } 705 706 void 707 dointr() 708 { 709 register long *intrcnt, inttotal, uptime; 710 register int nintr, inamlen; 711 register char *intrname; 712 713 uptime = getuptime(); 714 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 715 inamlen = 716 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 717 intrcnt = malloc((size_t)nintr); 718 intrname = malloc((size_t)inamlen); 719 if (intrcnt == NULL || intrname == NULL) { 720 (void)fprintf(stderr, "vmstat: %s.\n", strerror(errno)); 721 exit(1); 722 } 723 kread(X_INTRCNT, intrcnt, (size_t)nintr); 724 kread(X_INTRNAMES, intrname, (size_t)inamlen); 725 (void)printf("interrupt total rate\n"); 726 inttotal = 0; 727 nintr /= sizeof(long); 728 while (--nintr >= 0) { 729 if (*intrcnt) 730 (void)printf("%-12s %8ld %8ld\n", intrname, 731 *intrcnt, *intrcnt / uptime); 732 intrname += strlen(intrname) + 1; 733 inttotal += *intrcnt++; 734 } 735 (void)printf("Total %8ld %8ld\n", inttotal, inttotal / uptime); 736 } 737 738 /* 739 * These names are defined in <sys/malloc.h>. 740 */ 741 char *kmemnames[] = INITKMEMNAMES; 742 743 void 744 domem() 745 { 746 register struct kmembuckets *kp; 747 register struct kmemstats *ks; 748 register int i, j; 749 int len, size, first; 750 long totuse = 0, totfree = 0, totreq = 0; 751 char *name; 752 struct kmemstats kmemstats[M_LAST]; 753 struct kmembuckets buckets[MINBUCKET + 16]; 754 755 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 756 (void)printf("Memory statistics by bucket size\n"); 757 (void)printf( 758 " Size In Use Free Requests HighWater Couldfree\n"); 759 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 760 if (kp->kb_calls == 0) 761 continue; 762 size = 1 << i; 763 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 764 kp->kb_total - kp->kb_totalfree, 765 kp->kb_totalfree, kp->kb_calls, 766 kp->kb_highwat, kp->kb_couldfree); 767 totfree += size * kp->kb_totalfree; 768 } 769 770 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 771 (void)printf("\nMemory usage type by bucket size\n"); 772 (void)printf(" Size Type(s)\n"); 773 kp = &buckets[MINBUCKET]; 774 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 775 if (kp->kb_calls == 0) 776 continue; 777 first = 1; 778 len = 8; 779 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 780 if (ks->ks_calls == 0) 781 continue; 782 #ifdef notdef 783 if ((ks->ks_size & j) == 0) 784 continue; 785 #endif 786 name = kmemnames[i] ? kmemnames[i] : "undefined"; 787 len += 2 + strlen(name); 788 if (first) 789 printf("%8d %s", j, name); 790 else 791 printf(","); 792 if (len >= 80) { 793 printf("\n\t "); 794 len = 10 + strlen(name); 795 } 796 if (!first) 797 printf(" %s", name); 798 first = 0; 799 } 800 printf("\n"); 801 } 802 803 (void)printf( 804 "\nMemory statistics by type Type Kern\n"); 805 (void)printf( 806 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 807 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 808 #ifdef notdef 809 if (ks->ks_calls == 0) 810 continue; 811 #endif 812 (void)printf("%11s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 813 kmemnames[i] ? kmemnames[i] : "undefined", 814 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 815 (ks->ks_maxused + 1023) / 1024, 816 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 817 ks->ks_limblocks, ks->ks_mapblocks); 818 first = 1; 819 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 820 #ifdef notdef 821 if ((ks->ks_size & j) == 0) 822 continue; 823 if (first) 824 printf(" %d", j); 825 else 826 printf(",%d", j); 827 first = 0; 828 #endif 829 } 830 printf("\n"); 831 totuse += ks->ks_memuse; 832 totreq += ks->ks_calls; 833 } 834 (void)printf("\nMemory Totals: In Use Free Requests\n"); 835 (void)printf(" %7ldK %6ldK %8ld\n", 836 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 837 } 838 839 /* 840 * kread reads something from the kernel, given its nlist index. 841 */ 842 void 843 kread(nlx, addr, size) 844 int nlx; 845 void *addr; 846 size_t size; 847 { 848 char *sym; 849 850 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 851 sym = namelist[nlx].n_name; 852 if (*sym == '_') 853 ++sym; 854 (void)fprintf(stderr, 855 "vmstat: symbol %s not defined\n", sym); 856 exit(1); 857 } 858 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 859 sym = namelist[nlx].n_name; 860 if (*sym == '_') 861 ++sym; 862 (void)fprintf(stderr, "vmstat: %s: %s\n", sym, kvm_geterr(kd)); 863 exit(1); 864 } 865 } 866 867 void 868 usage() 869 { 870 (void)fprintf(stderr, 871 #ifndef NEWVM 872 "usage: vmstat [-fimst] [-c count] [-M core] \ 873 [-N system] [-w wait] [disks]\n"); 874 #else 875 "usage: vmstat [-ims] [-c count] [-M core] \ 876 [-N system] [-w wait] [disks]\n"); 877 #endif 878 exit(1); 879 } 880
Indexes created Mon Sep 22 13:09:51 GMT 2025